package com.example.yls.demoa;

import android.content.Context;

/**
 * Created by yls on 2018/11/7.
 */

public class DBManger {
    private static DBDao db;
    public static DBDao getIntance(Context context){
        if(db == null){
            db = new DBDao(context);
        }
        return db;
    }
}